CN105731743A - Comprehensive treatment system for urban lake pollution sludge - Google Patents
Comprehensive treatment system for urban lake pollution sludge Download PDFInfo
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- CN105731743A CN105731743A CN201610127730.7A CN201610127730A CN105731743A CN 105731743 A CN105731743 A CN 105731743A CN 201610127730 A CN201610127730 A CN 201610127730A CN 105731743 A CN105731743 A CN 105731743A
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- mud
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a comprehensive treatment system for urban lake pollution sludge, and belongs to the field of urban ecological ring protection. The comprehensive treatment system disclosed by the invention comprises a sludge transfer and transport system, a sludge dehydration-consolidation treatment system and a solid mud cake utilization system, wherein urban river and lake pollution sludge is transferred and transported to a first-end sludge impurity removal pool of the sludge dehydration-consolidation treatment system through the sludge transfer and transport system; the polluted sludge is treated by a sludge regulating reservoir, a sludge equalization basin and a plate-frame pressure filtration separator, is transformed into solid mud cakes which meet the national standard and regulation that the moisture content is less than or equal to 40%, and is utilized according to the standard; sewage supernatant treated by the sludge impurity removal pool, the sludge regulating reservoir and the sludge consolidation pool, sewage filtrate treated by the plate-frame pressure filtration separator and up-to-standard sewage treated by the tail end sewage treatment pool can be discharged into a municipal sewage pipe network system. According to the system disclosed by the invention, a narrow field treatment field can be set nearby according to the number and pollution degree of lake sludge, continuous factory operation is realized, the treatment efficiency is high, and secondary pollution is eliminated.
Description
Technical field
A kind of comprehensive treatment system for urban lake polluted sludge of the present invention, belongs to the city ecological environment protection field.
Background technology
Urban lake mud is by the integrated solid material in city domestic sewage or industrial wastewater, the water content being sunken to urban lake bed mud and formed is more than heterogeneous body cohesive soil be more than or equal to 1.5 of liquid limit, void ratio, and this urban lake mud includes that high-load is organic and fines pollutant.Matrix lithological characteristic according to bottom mud in lake and sense organ degree, silt from the bottom of lake can be divided into pollution layer, transition zone, three layers of normal layer from top to bottom, and wherein pollution layer is the Lu Yuanxing main accumulation place entering lake pollutant, is the primary pollution source of lake pollution.Therefore, the process of urban lake mud is directly connected to the self-purification capacity of urban lake and the lifting of Urban Water Environment, if urban lake mud is mishandling, it would be possible to the propagation polluted or secondary pollution.At present, the main method processing lake pollution mud both at home and abroad is as follows:
1) natural-dehydration seasoning
This method is that the silt from the bottom of lake excavated is stacked open area, utilizes nature light, convected air to give free rein to dehydration.This method main drawback is that dewatering efficiency is low, length consuming time, occupied ground is big, very big by ectocine, particularly lacks harmless treatment program, there is pollution transportation risk, and surrounding enviroment impact is very big.
2) vacuum method
This method is to be placed in by the silt from the bottom of lake of excavation in process pond, lays anti-seepage geotextile, pipeline, sand filter film and vacuum pump, to the mud evacuation processed in pond, utilize vacuum pressure and mud dead weight to reach the method to sludge dewatering in pond.Main drawback is that of this method easily causes the blocking of geotextiles aperture, cause mud for a long time cannot dehydrate, and there is the potential risk of pollution transportation.
3) geotextile tube bag method
This method is high-moisture percentage mud or mud to be squeezed in geotextile tube bag, utilizes geotextile tube bag water penetration and deadweight to reach the engineering method of mud densification and dehydration.
Main drawback is that of this method many urban lake polluted sludges big for clay content, organic, easily cause the blocking of pipe racks aperture, cause the mud for a long time cannot dehydrate, and because the harmful substance of mud not carried out sealing and harmless treatment, there is the potential risk of pollution transportation, long construction period, need to take a large amount of place for a long time.
4) mechanical dehydration method
The equipment that traditional mechanical dehydration uses mainly has centrifuge, belt filter press.It is said that in general, this method can only slough the surface moisture of mud, the mud moisture content after process is still significantly high, and costs and poor dehydration results, energy consumption are big, and because mud not being consolidated and harmless treatment, there is secondary pollution risk.
Therefore, along with the needs of city environmental protection development, scientific disposal and the disposal to the polluted sludge of urban lake, research and the important topic paid close attention to are become.
Summary of the invention
It is an object of the invention to provide a kind of comprehensive treatment system for urban rives lake pollution mud, for urban rives, the high organic content of lake silt and fines pollutant characteristic, contaminated mud is transferred to sludge dewatering and solidifying process system process, make this mud be converted into the solid-state mud cake meeting existing national regulation requirement moisture content≤40%, be used；The waste water of its separation meets three grades of discharge standards of " integrated wastewater discharge standard " (GB8978-1996); enter Municipal sewage conduct; enter follow-up sewage treatment plant to process, thus realizing the purification to urban rives lake and environmental protection requirement.
The present invention seeks to by realizing with technical scheme
A kind of comprehensive treatment system for urban rives lake pollution mud of the present invention, including mud shift induction system, sludge dewatering consolidation process system and solid-state mud cake utilize system, described sludge dewatering consolidation process system, including mud remove impurity pond, mud regulating reservoir, sludge solidification pond, filter press seperator, sewage balancing reservoir, treatment tank；Urban rives lake pollution mud is delivered to the head end mud remove impurity pond of sludge dewatering consolidation process system by mud transfer induction system transfer, polluted sludge is by after mud regulating reservoir, mud balancing reservoir, filter press separator for processing, it is converted into the solid-state mud cake meeting existing national regulation, regulatory requirements moisture content≤40%, utilizes by code requirement；The sewage supernatant processed by mud remove impurity pond, mud regulating reservoir, sludge solidification pond and the sewage filtrate passing through filter press seperator, processed the sewage of the three grades of discharge standards meeting " integrated wastewater discharge standard " (GB8978-1996) by the treatment tank of end, its discharge outlet enter municipal wastewater pipe network system.
Described remove impurity pond is provided with grid mechanism, to intercept the solids removing greater particle size.
The quantity of described mud regulating reservoir is 1-3, and it is 1:500-600 that mud regulating reservoir is provided with the weight ratio of mechanical agitator and flocculant concentration pump, flocculant and mud.
Described sludge solidification pond is provided with soil-solidified-agent feed bin, its soil-solidified-agent dosage accounts in balancing reservoir the 5%～8% of mud weight, by soil-solidified-agent and slurry reaction, irreversible condensation hardening shell is formed on sludge granules surface, effectively reduce the activity of wherein polluter, it is achieved to the solidification of the heavy metal in mud and poisonous and harmful substance and stable.
The feed pressure 1.0MPa of described filter press seperator, squeeze pressure 1.0MPa, output cake thickness is 33mm ± 2mm, meets relevant specification of country and requires and environmentally-friendly sanitary requirement.
The top of the treatment tank of described end has sewage effluent, bottom to have slag-drip opening, and it is furnished with flocculant adder, the sewage mixed by sewage balancing reservoir in treatment tank through flocculation, precipitation process, its sewage is entered municipal wastewater pipe network system by sewage effluent, and its precipitation fine slag is fed back to sludge solidification pond by slag-drip opening by pipeline.
Described mud transfer induction system, including cutter suction dredger and buoy dreding pipeline or embedded type hidden pipe.
Described solid-state mud cake utilizes system, including the relevant criterion detection up to standard of solid-state mud cake with by specification application.
Comprehensive treatment system of the present invention is to include the transfer conveying of municipal pollution mud, sludge dewatering consolidation process, standardize the utilization of harmless solid-state mud cake, and the tail end sewage discharge being connected with city planting ductwork is in the process system of interior complete set, harmful substance in mud can be carried out the environment-friendly type sludge curing agent that sludge dewatering consolidation process adopts efficient passivation and sealing is formed as solid-state mud cake, the solid-state mud cake formed meets " urban wastewater treatment firm sludge treatment afforestation shale " (GB/T23486-2009) and " the agricultural shale of urban wastewater treatment firm sludge treatment " (CJ/T309-2009) standard-required, and at engineering backfill soil, gardens soil, the urban construction aspects such as landfill yard overburden soil and improvement soil are utilized effectively；By the sewage that sludge dewatering consolidation process system is collected, it is connected with city planting ductwork through pipeline at its tail end outlet, enters follow-up sewage treatment plant and process；Sludge dewatering consolidation process system of the present invention can according to the quantity of lake silt, pollution level, treatment in accordance with local conditions arranges little scope Treatment stations nearby, after completing sludge treatment, instant dismounting and cleaning Treatment stations, and recovering former state, maneuverability, treatment effeciency is high, the continuous factory operation of processing procedure, workmen is not directly contacted with mud；Effectively stop secondary pollution；Directly can dock with multiple dredging scheme additionally, dewatering and coagulating processes system, compatible strong.The present invention is to the improvement of urban rives lake silt and the city ecological environment protection effect is notable.
Accompanying drawing explanation
Fig. 1 sludge dewatering consolidation process flow chart of the present invention
Detailed description of the invention
Further illustrate how the present invention implements in conjunction with drawings and Examples
A kind of comprehensive treatment system for urban rives lake pollution mud of the present invention, induction system is shifted including mud, sludge dewatering consolidation process system and solid-state mud cake utilize system, described sludge dewatering consolidation process system, including mud remove impurity pond 1, mud regulating reservoir 2, sludge solidification pond 3, filter press seperator 4, sewage balancing reservoir 5, treatment tank 6, urban rives lake pollution mud is delivered to the head end mud remove impurity pond 1 of sludge dewatering consolidation process system by mud transfer induction system transfer, contaminated mud passes through mud regulating reservoir 2, sludge solidification pond 3, after filter press seperator 4 processes, transform into the solid-state mud cake meeting existing national regulation requirement moisture content≤40%, utilize by specialty specification requirement；The sewage supernatant processed by mud remove impurity pond 1, mud regulating reservoir 2, sludge solidification pond 3 and the sewage filtrate separated by filter press seperator 4, combined sewage through sewage balancing reservoir 5, after process again through end treatment tank 6, meeting three grades of discharge standards of " integrated wastewater discharge standard " (GB8978-1996), the sewage after process enters municipal wastewater pipe network system from the discharge outlet of the treatment tank 6 of end.
Described remove impurity pond 1 is provided with grid mechanism, to intercept the solids removing greater particle size.
The quantity of described mud regulating reservoir 2 is 1-3, and it is 1:500-600 that mud regulating reservoir is provided with the weight ratio of mechanical agitator and flocculant concentration pump, flocculant and mud, and flocculant is conventional aluminium polychlorid.
Described sludge solidification pond 3 is provided with soil-solidified-agent feed bin, soil-solidified-agent dosage accounts in balancing reservoir the 5%～8% of mud weight, the soil-solidified-agent added meets Ministry of Construction's standard " soil-solidified-agent " (CJ/T3073-1998) requirement, after being sufficiently stirred for homogenizing in solidifying pool, by firming agent and slurry reaction, form irreversible condensation hardening shell on sludge granules surface, after hardening, mud has just possessed certain structural strength；The condensation hardening shell being wrapped in sludge granules can effectively reduce the activity of wherein polluter, thus realizing the solidification to the heavy metal in mud and poisonous and harmful substance and stable.
The feed pressure 1.0MPa of described filter press seperator 4, squeeze pressure 1.0MPa, output cake thickness is 33mm ± 2mm, meet relevant specification of country to require and environmentally-friendly sanitary requirement, heavy metal in mud cake and the solidification of poisonous and harmful substance and stable degree are high, without secondary precipitation, it is possible to be used as engineering backfill soil, agricultural, gardens soil, refuse landfill sealing overburden soil, construction material.
The top of the treatment tank 6 of described end has sewage effluent, bottom to have slag-drip opening, and it is furnished with flocculant adder, combined sewage through sewage balancing reservoir 5 enters treatment tank 6, after flocculation, precipitation process, its sewage is entered municipal wastewater pipe network system by sewage effluent, and its precipitation fine slag is fed back to sludge solidification pond 3 by slag-drip opening by pipeline.
Described mud transfer induction system, including cutter suction dredger and buoy dreding pipeline or embedded type hidden pipe.
Described solid-state mud cake utilizes system, including the relevant criterion detection up to standard of the solid-state mud cake to output with by specification application；Described relevant criterion is " urban wastewater treatment firm sludge treatment afforestation shale " (GB/T23486-2009) and " the agricultural shale of urban wastewater treatment firm sludge treatment " (CJ/T309-2009).
Embodiment 1: present invention application in Moshui Lake of Wuhan comprehensive improvement dredging work
Mud 24.536 × 10 is removed in side, the Moshui Lake of Wuhan southeast, Hanyang District, Wuhan City Zone4m3, mud is delivered to the sludge dewatering consolidation process system of Treatment stations by discharge pipeline, after being processed by the dewatering and coagulating of such as above-mentioned embodiment, is converted into the solid-state mud cake of moisture content≤40%, and mud cake outward transport utilizes as backfill soil landfill；Processed the sewage meeting " integrated wastewater discharge standard " (GB8978-1996) three grades of discharge standards by end treatment tank, enter municipal wastewater pipe network system from its end discharge outlet.Adopt the present invention to city Moshui Lake of Wuhan sludge treatment, the purification of Moshui Lake of Wuhan waters own and improvement and lifting effect to its periphery city ecological environment is notable.
Claims (8)
1. the comprehensive treatment system for urban rives lake pollution mud, it is characterized in that, including mud shift induction system, sludge dewatering consolidation process system and solid-state mud cake utilize system, described sludge dewatering consolidation process system, including mud remove impurity pond, mud regulating reservoir, sludge solidification pond, filter press seperator, sewage balancing reservoir, treatment tank；Urban rives lake pollution mud is delivered to the head end mud remove impurity pond of sludge dewatering consolidation process system by mud transfer induction system transfer, contaminated mud is by after mud regulating reservoir, mud balancing reservoir, filter press separator for processing, it is converted into the solid-state mud cake meeting existing national regulation, regulatory requirements moisture content≤40%, utilizes by code requirement；The sewage supernatant processed by mud remove impurity pond, mud regulating reservoir, sludge solidification pond and the sewage filtrate passing through filter press seperator, processed the sewage of the three grades of discharge standards meeting " integrated wastewater discharge standard " (GB8978-1996) by the treatment tank of end, its discharge outlet enter municipal wastewater pipe network system.
2. a kind of comprehensive treatment system for urban rives lake pollution mud according to claim 1, it is characterised in that remove impurity pond is provided with grid mechanism, to intercept the solids removing greater particle size.
3. a kind of comprehensive treatment system for the contaminated mud in urban rives lake according to claim 1, it is characterized in that, the quantity of mud regulating reservoir is 1-3, and it is 1:500-600 that mud regulating reservoir is provided with the weight ratio of mechanical agitator and flocculant concentration pump, flocculant and mud.
4. a kind of comprehensive treatment system for urban rives lake pollution mud according to claim 1, it is characterized in that, sludge solidification pond is provided with soil-solidified-agent feed bin, its soil-solidified-agent dosage accounts in balancing reservoir the 5%～8% of mud weight, by soil-solidified-agent and slurry reaction, formed on sludge granules surface and irreversible condense hardening shell, effectively reduce the activity of wherein polluter, it is achieved to the solidification of the heavy metal in mud and poisonous and harmful substance and stable.
5. a kind of comprehensive treatment system for urban rives lake pollution mud according to claim 1, it is characterized in that, the feed pressure 1.0MPa of filter press seperator, squeeze pressure 1.0MPa, discharging cake thickness is generally 33mm ± 2mm, meets relevant specification of country and requires and environmentally-friendly sanitary requirement.
6. a kind of comprehensive treatment system for the contaminated mud in urban rives lake according to claim 1, it is characterized in that, the top of the treatment tank of end has sewage effluent, bottom to have slag-drip opening, and it is furnished with flocculant adder, the sewage mixed by sewage balancing reservoir in treatment tank through flocculation, precipitation process, its sewage is entered municipal wastewater pipe network system by sewage effluent, and its precipitation fine slag is fed back to sludge solidification pond by slag-drip opening by pipeline.
7. a kind of comprehensive treatment system for urban rives lake pollution mud according to claim 1, it is characterised in that mud transfer induction system, including cutter suction dredger and buoy dreding pipeline or embedded type hidden pipe.
8. a kind of comprehensive treatment system for urban rives lake pollution mud according to claim 1, it is characterised in that solid-state mud cake utilizes system, including the relevant criterion detection up to standard of solid-state mud cake with by specification application.
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| CN201610127730.7A CN105731743A (en) | 2016-03-07 | 2016-03-07 | Comprehensive treatment system for urban lake pollution sludge |
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| CN201610127730.7A CN105731743A (en) | 2016-03-07 | 2016-03-07 | Comprehensive treatment system for urban lake pollution sludge |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277678A (en) * | 2016-10-21 | 2017-01-04 | 深圳市深水水务咨询有限公司 | River bottom mud waterborne moveable processing system |
| CN106517703A (en) * | 2016-10-27 | 2017-03-22 | 河海大学 | Heavy metal pollution sludge treatment system and application |
| CN106746452A (en) * | 2016-12-13 | 2017-05-31 | 上海勘测设计研究院有限公司 | A kind of small-sized mud mechanism filter-pressing curing apparatus and application method |
| CN106977071A (en) * | 2017-05-18 | 2017-07-25 | 贵州美瑞特环保科技有限公司 | A kind of new mercurous and heavy metal sewage sludge dehydration minimizing device |
| CN107938737A (en) * | 2017-11-15 | 2018-04-20 | 中交天津港航勘察设计研究院有限公司 | A kind of dystrophication sediment dredging cures disposal continuous treatment method |
| CN110028222A (en) * | 2019-04-02 | 2019-07-19 | 叶文勇 | A kind of construction slurry solidification processing method |
| CN110294579A (en) * | 2019-04-11 | 2019-10-01 | 中国电建集团华东勘测设计研究院有限公司 | A kind of method of disposal of sludge solidification, resource reutilization |
| CN110372168A (en) * | 2019-07-09 | 2019-10-25 | 上海理工大学 | A kind of method of river sludge resource utilization |
| CN112142293A (en) * | 2020-09-24 | 2020-12-29 | 中国电建集团华东勘测设计研究院有限公司 | Conditioning type sludge dewatering agent and method for manufacturing planting soil by using eutrophic water body dredging mud |
| CN112144600A (en) * | 2020-09-18 | 2020-12-29 | 中国一冶集团有限公司 | Mucky soil dewatering device vehicle and using method thereof |
| CN113248103A (en) * | 2021-06-29 | 2021-08-13 | 湖南江山春锦科技有限公司 | Preparation method and device of organic material for desert control |
| CN113860689A (en) * | 2021-11-16 | 2021-12-31 | 中冶建工集团有限公司 | Black and odorous water body sludge treatment process |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277678A (en) * | 2016-10-21 | 2017-01-04 | 深圳市深水水务咨询有限公司 | River bottom mud waterborne moveable processing system |
| CN106517703A (en) * | 2016-10-27 | 2017-03-22 | 河海大学 | Heavy metal pollution sludge treatment system and application |
| CN106746452A (en) * | 2016-12-13 | 2017-05-31 | 上海勘测设计研究院有限公司 | A kind of small-sized mud mechanism filter-pressing curing apparatus and application method |
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| CN107938737A (en) * | 2017-11-15 | 2018-04-20 | 中交天津港航勘察设计研究院有限公司 | A kind of dystrophication sediment dredging cures disposal continuous treatment method |
| CN110028222A (en) * | 2019-04-02 | 2019-07-19 | 叶文勇 | A kind of construction slurry solidification processing method |
| CN110294579A (en) * | 2019-04-11 | 2019-10-01 | 中国电建集团华东勘测设计研究院有限公司 | A kind of method of disposal of sludge solidification, resource reutilization |
| CN110372168A (en) * | 2019-07-09 | 2019-10-25 | 上海理工大学 | A kind of method of river sludge resource utilization |
| CN112144600A (en) * | 2020-09-18 | 2020-12-29 | 中国一冶集团有限公司 | Mucky soil dewatering device vehicle and using method thereof |
| CN112142293A (en) * | 2020-09-24 | 2020-12-29 | 中国电建集团华东勘测设计研究院有限公司 | Conditioning type sludge dewatering agent and method for manufacturing planting soil by using eutrophic water body dredging mud |
| CN113248103A (en) * | 2021-06-29 | 2021-08-13 | 湖南江山春锦科技有限公司 | Preparation method and device of organic material for desert control |
| CN113860689A (en) * | 2021-11-16 | 2021-12-31 | 中冶建工集团有限公司 | Black and odorous water body sludge treatment process |
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Application publication date: 20160706 |